Compared to supersequence boundaries, the depositional hiatus at sequence boundaries is shorter and sequence boundaries are not compatible with lithostratigraphic unit boundaries.

沉积序处沉积间断的时间相序要短，岩石地单往往不一致。

It is emphasized that the first flooding surface (FFS) is used as a standard or useful marker in optimizing chronostratigraphic and lithostratigraphic boundaries.

在年代地方，进一步强调以初始海泛(FFS)作为优化年代地“阶”的标准。